#104 kgf to N Error

closed-fixed
nobody
5
2016-04-25
2009-09-04
Anonymous
No

Evaluating an expression in kgf and then converting to N gives an incorrect prefix.

400MPa⋅(pi⋅(88mm)^2/4) to kgf
≈ 248081.59 kgf

then convert to N...
≈ 2.433 kN

If evaluated in N initially the correct answer is given.

400MPa⋅(pi⋅(88mm)^2/4) to N
≈ 2.433 MN

See attached screenshot

Discussion

  • Nobody/Anonymous

    Screenshot of kgf to N conversion error

     
  • Matteo

    Matteo - 2010-05-27

    I cannot reproduce this with latest development branch, even with the same code posted in the bug description.

    > 400MPa⋅(pi⋅(88mm)^2/4) to kgf

    400 * megapascal * ((pi * ((88 * millimeter)^2)) / 4) = approx. 248081.59 kgf

    > 248081.59 kgf to N

    248081.59 * kilopond = approx. 2.4328493 MN

    > 400MPa⋅(pi⋅(88mm)^2/4) to N

    400 * megapascal * ((pi * ((88 * millimeter)^2)) / 4) = approx. 2.4328494 MN

    Can someone else try to reproduce this?

     
  • Jonathan Stickel

    I can reproduce this in 0.9.7:

    > 400MPa*pi*(88mm)^2/4 to kgf

    (400 * megapascal * pi * ((88 * millimeter)^2)) / 4 = approx. 248081.59 kgf

    > to N

    248081.59 kgf = approx. 2.4328494 kN

    > 400MPa*pi*(88mm)^2/4 to N

    (400 * megapascal * pi * ((88 * millimeter)^2)) / 4 = approx. 2.4328494 MN

     
  • Hanna K.

    Hanna K. - 2016-04-25
    • Status: open --> closed-fixed
     

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